Molding-machine.



J. T. BRENT, SECOND,

MOLDING MACHINE. APPLIOATION FILED saw. 11, 1906.

Patented Feb. 23, 1909.

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J T. BRENT, 330cm). MOLDING MACHINE.

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J. T. BRENT, SECOND.

Patented Feb. 23, 1909.

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i/Pnaooeo UNITED STATES PATENT OFFICE.

JOHN THOMAS BRENT, SECOND, OF GOLD SPRING, NEW YORK, ASSIGNOR OFONE-HALF 'lO JAMES BENNETT SOUTHARD, OF GOLD SPRING, NEW YORK, ANDONE-HALF TO BERGEN FOUNDRY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OFNEW JERSEY.

MOLDING-MACHINE .j

To all whom it may concern:

Be it known that 1, JOHN Tnonas BRENT, Second, a citizen of the UnitedStates of America, residing at Cold Spring, in the county of Putnam andState of New York, United States of America, have invented a new anduseful Molding-Machine; and I do hereby declare the following to be afull, clear, and exact description of the same.

The present improvements relate to machines for making sand-molds,especially molds employed in the casting of small metallic articles,such as sash-weights or sashweight units of the kind described andclaimed in the United States Patents No. 826705 and No. 826707, bothdated July 24, 1906, and granted upon applications filed by me.

The object of my invention is to provide a molding machine which willpermit the care ful separation of the packed flask from thepattern-board, rigidly sustain said flask while turning the same, andwill deposit the reversed flask at the exact point desired without anyjarring or rough or unsteady handling, and, as a consequence, thelaborer using my machine is ,able to produce a greater number ofcomplete and satisfactory flasks than heretofore.

The preferred embodiment of my invention illustrated in the accompanyingdrawings is an exceedingly simple and strong machine, and may beemployed to reverse a packed flask, after separation from the patternboard, or to permit the flask to be removed without being reversed.

Referring to the accompanying drawings, Figure 1 is a side view of thecomplete machine, the flask being shown, by dotted lines, also inreversed position; Fig. 2 is a plan view of the machine, thebottom-board and part of the flask being removed; Fig. 3 is a front viewof the machine, with parts of the frame broken away; Fig. 4 is a viewsomewhat similar to Fig. 2, showing the patterns; Fig. 5 is a side viewof the upper part of the machine, showing the flask-stu'iport, carryingthe stripping-board and flask, raised to, separate from the patterns;Fig. 6 is a view from the rear of the machine, of a part thereof; Fig. 7is a top view of the frame of the machine, the pattern-board and flasksupport being omitted; Fig. 8 shows a detail of Specification of LettersPatent.

Application filed September 11, 1906.

Patented Feb. 23, 1909.

Serial No. 884,093.

the device for locking the flask-support in 1 its raised position; Fig.9 shows a detail of Fig. 1, illustrating the connection of the rods withthe treadle and the support for the i latter; Fig. 10 shows a detail ofsaid support,

l and Fig. 11 shows the connection of the l treadle with one of therods.

The machine shown is provided with a rectangular crate-like frame orbody, and I have preferred to employ, so far as possible for thispurpose, ordinary commercial and easily-assembled metallic pipes or rodsand ordinary pipe couplings or pipe-fittings at the intersections of thebars. As a result, I produce a base-frame quickly and cheaply, and onehaving great strength and lightness.

The base-frame shown in the drawings comprises four corneruprights, suchas pipes or rods 1, 2, 3 and 4, and the frame is also provided with topbars or pipes 5, 6, 7, and 8, and is further strengthened by thehorizontal side bars or pipes 9 and 10 and bylonger horizontal bars orpipes (such as 95, Fig. 3) at the front or rear of the frame.

The pipe-couplings or pipe-fittings employed may be of any suitableform, such as the three-way fittings 11, and the four-way fittings 12,13 and 14. I prefer, however, that the top-bars 6, 7 and 8 and the frontuprights 1 and 2 shall be connected by castings or fittings 15, 15,provided with forwardlydisposed shelves or supports 17, 17, while thetop bars 7, 5 and 8 and the rear uprights 3 and 4 shall be connected byordinary fittings or pipe-couplings 16, 16. I also prefer that above thecouplings 1.5, 15, and 16, 16, there shall be supports 54 which, asshown in Figs. 1, 3 and 6, directly support the pattern-board. Ifdesired, supports 54 may (see Figs. 3 and 6) be cast directly upon thecoupling or fitting, or may (as shown in Fig. 1) be the upper i ends ofcast or wrought plates screwed into engagement with the couplings orfittings.

At its opposite sides, the frame has hollow upright pipes or tubes 18,disposed midway between the corner uprights, and such hol- 1 lowuprights 18 are secured in place by the i four-way couplings or fittings19 and 20 t which engage respectively with the bars 8 f and 9. Acrossthe top of the upper part of the 1 frame, I prefer to secure a brace,such as a f tube 21, connecting with both bars 7 and 8,

'way couplings or fittings 24.

by means of fittings 20, and I also prefer to employ parallel tubes 22and 23 running from front to rear of the machine, and connected with thetubes 5, 6 and 21 by four- This results in producing sleeves or housingscomprising 0th tubes 22 and 23 and the couplings 24, wherein I slidablysecure rods 25 (see, especially, Fig. 7), which are connected, at thefront of the machine, by a short tube and by the fittings 26, 26,engaging said tube and the rods 25. A plate 27 (see Figs. 1, 6 and 7) issecured across said fittings, and serves, as described hereinafter, forthe flask when inverted. As stated, the uprights 18 are hollow ortubular, and serve as means for guides for raising and lowering (ashereinafter de scribed) a flask-support. For this purpose, each upright18 contains a rod 28, fitted therein so as to freely slide, and theupper ends of the two rods 28 are provided (see Fig. 5) with threads forengagement with members of a flask-support, and freely slide past thepattern-board and patterns.

The lower end of each rod (see especially Figs. 9 and 11) is enlarged at29, and pivotally fits the reduced end 34 of a bar 31, being heldbetween a nut 30 and a washer 33, which in turn bears against anenlarged end of a treadle side-arm 32, said enlarged end having anopening which surrounds the reduced end of bar 31. The two treadleside-arms are formed of asingle flat bar of metal, and are connected bythe integral cross-piece 35 (constituting the treadle proper) runningacross the frame at the front thereof.

Each side-arm 32 is suspended from and pivotally connected with theframe, by means of a link 37, the lower end of which is forked andstraddles the side-arm (a pin 36 and nut passing through the side-armand both forks), while the upper end of said link 37 is provided with anopening which loosely surrounds a pin 38. T16 last-named pin passesthrough the rearward extension of the pipe-fitting 13, and the pin isheld to place (and the link retained thereon) by the nuts 40 and washer39.

I have heretofore stated that the rods 28 are slidable in the uprights18, to raise and lower the flask-support. By preference, I provide themachine with means for locking the rods in the raised position. For thispurpose each rod 28 may have (see Fig. 8) a recess 41 at one edge, andeach such recess is entered, when the rods are raised, by a bolt 42(Fig. 7). The two bolts 42 are maintained in proper position by rings 43secured in pairs upon the horizontal bar or tube 21, and the two bolts42 are pivotally secured 1 upon a lever 44 at opposite sides of a pivotpin 45. The long arm 46 of the lever slides under a metal strap 47, andthe extremity of said arm is pivotally connected with one end Q,

of a long rod 48, the other end of which (at the outside of the frame)bears a knob 49.

The pivot pin 45 and the strap 47 are secured to a plate 50 of sheetsteel or other metal, suitably secured to the bars or tubes, 6. Saidplate 56 also bears a pin 51, and a spring is curled around said pin insuch manner as to have one arm 52 thereof bear against a fixedprojection while the other end 53 tends to press the arm 46 outwardly,and thus always hold the bolts 42 ready to enter the sockets 41 whenpresented by the rising of the bars.

To the upper end of the frame a patternboard 55, of any usualconstruction, is se cured, as for instance by fastening to the castings54. Upon said pattern-board any number of patterns 56, are secured. Inthe drawings (especially Fig. 4) I have shown patterns for making moldsfrom which weightunits are subsequently to be cast.

A stripping-board 57 is provided of any usual construction, and I have astrippingboard wnich, at one end has pins 58 and at the other end haspivot pins 59. The first-- named pins are adapted to snugly fit into andreadily rise rrom the sockets 60 in the rear ends of a pair of castingsor side-frames 62, while the pins 59 are adapted to hinge into openingsformed in the en arged forward ends of said castings or side frames. Thestripping-board is provided with openings which exactly and. closely fitaround the patterns.

Upon the strippi board referred to and at each side end thereof, Isecure an upwardly projecting fixed pin 69, each of which pins mayconsist of a short heavy steel wire bent upwardly and outwardly.

A flask 63, is adapted to be placed on the stripping board. Said flaskmay consist of a hollow rectangular frame 63, and be provided at itsopposite sides near its top edge, with outwardly-projecting plates 64,constituting handles, and with projecting blocks 65 its sides near itsbottom edge. Each block 65 has two slots 66 and 67, the first adapted topermit the pin 69 to pass therethrough, and the second carrying amovable pin 7 O in shape corresponding to the pin 69.

In use, the parts are assembled, with the flask-support lowered as shownin Fig. 6 and the locking pin 7 O is swung so as to be under the fixedpin 69, whereupon the flask is locked to the stripping-plate which thusfits around the patterns 56 projecting therethrough. Sand is then packedinto the flask, and a bottom board 71 is secured thereon, as shown inFig. 1. The workman then presses upon the treadle 35, causing it and thelinks 37 to swing to the positions shown by dotted lines in Fig. 9, andforcing the rods 28 to rise and carry upwardly therewith the sideframes62 to the position shown by dotted lines in Fig. 1 and by full lines inFig. 5. This results in raising the stripping-plate and the flask, withthe packed sand. At that time, the flask may be immediately unlocked andremoved or may be reversed. If the latter operation is to be performed,the workman grasps the handles 64, and swinging the stripping-board and,the flask about the pivots 59, reverses the mold and rests the same(with the bottom-board 71 lowermost) upon the shelves 17 and upon theplate 27 previously drawn forwardly to the position shown in Fig. 1. Ifdesired, the table or plate 27 may be slid back when each flask is to bepacked, and brought forward when each flask is to be reversed.

What I claim is:

1. In a molding machine, a frame, a pattern-holding board securedthereto, a flasksupport, a stripping board carried thereby, connectionsfor raising and lowering the flask-support and stripping-boardrelatively to the pattern-holding board, and a sliding bolt and a springoperating the same for locking the flask-support in raised position.

2. In a molding machine, a frame, a pattern-holding board securedthereto, a flasksupport, a stripping-board carried thereby, connectionsfor raising and lowering the flasksupport and stripping-board relativelyto the pattern-holding board, a sliding bolt and a spring operating thesame for locking the flask-support in raised position, and a knob formoving the bolt to unlocking position.

3. In a molding machine, a frame, a pat tern-holding board, aflask-support, means for moving one of said parts to and from the other,a stripping-board having a pivotal connection with. the flask supportand provided with means for locking the flask to the stripping-board,and a table carried by said frame and having a connection therewith topermit said table to be folded within the frame and to be positioned toreceive a reversed flask carried by the stripping-board;

4. In a molding machine, a frame, comprising a pair of parallel andvertically-disposed r members, a patternholding board, a flask support,means for moving one of said parts to and from the other, and a tablearranged to receive flasks, said table having parts which slidablyengage with the aforesaid vertically-disposed members of the frame.

5. In a molding machine, a frame, a pattern-board, a flask-support abovesaid board and means for moving one of said parts from the other, saidflask-support comprising a pair of side-frames each of which has asocket at one end, and a stripping-board pivotally carried by bothside-frames and provided with stops which it into the sockets aforesaid.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN THOMAS BRENT, Sneorw.

Witnesses EDWARD E, BERRIGAN, BENJAMIN I'IARMAN.

